I think these kinds of things are normally handled in the alsa-ucm-conf
package, so adding a task there.
** Also affects: alsa-ucm-conf (Ubuntu)
Importance: Undecided
Status: New
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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/2114760
Title:
Missing drivers for Cirrus Logic CS8409 and AMDGPU on iMac 27" (2017)
5K
Status in alsa-driver package in Ubuntu:
New
Status in alsa-ucm-conf package in Ubuntu:
New
Bug description:
Subject: Missing drivers for Cirrus Logic CS8409 and AMDGPU on iMac
27" (2017) 5K
Dear Ubuntu OS Team,
I am using Ubuntu 24.04.02 on an iMac 27" (2017) 5K and have
encountered issues with the Cirrus Logic CS8409 audio chip. Alsa,
PulseAudio, and Pipewire are unable to properly utilize it. I found a
driver on GitHub (github.com/egorenar/snd-hda-codec-cs8409), but it
requires outdated headers, making it impossible to install.
AMDGPU Issues: During system installation, the display appears in a
tiny interface. While it works fine after changing the resolution,
navigating such an interface is extremely difficult. It is unclear
which resolution is correct for this iMac model.
Audio Issues:
There is no sound during installation, after installation, or even
after system updates.
The sound settings only show "Dummy Output", with no available audio
devices.
When I attempt to install the driver using:
sudo apt install linux-headers-generic
sudo apt install build-essential git gcc-12
the driver gets uninstalled after a system update, or the sound stops working
entirely—forcing me to repeat the process from scratch. It seems that
PulseAudio, ALSA, and Pipewire conflict with the Cirrus Logic CS8409 chip.
I would like to ask if there is a solution to this issue or whether a
fix could be included in an upcoming Ubuntu OS update or package
release.
Thank you for your help and for the great work on Ubuntu!
Best regards, Marek
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: alsa-base 1.0.25+dfsg-0ubuntu7
ProcVersionSignature: Ubuntu 6.8.0-60.63~22.04.1-generic 6.8.12
Uname: Linux 6.8.0-60-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/seq: mahav 1315 F.... pipewire
/dev/snd/controlC1: mahav 1317 F.... wireplumber
/dev/snd/controlC0: mahav 1317 F.... wireplumber
CasperMD5CheckResult: pass
CurrentDesktop: zorin:GNOME
Date: Mon Jun 16 20:08:10 2025
InstallationDate: Installed on 2025-06-01 (15 days ago)
InstallationMedia: Zorin-OS 17.3 Core 64bit
PackageArchitecture: all
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
SourcePackage: alsa-driver
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/23/2024
dmi.bios.release: 0.1
dmi.bios.vendor: Apple Inc.
dmi.bios.version: 529.140.2.0.0
dmi.board.name: Mac-BE088AF8C5EB4FA2
dmi.board.vendor: Apple Inc.
dmi.board.version: iMac18,3
dmi.chassis.type: 9
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-BE088AF8C5EB4FA2
dmi.modalias:
dmi:bvnAppleInc.:bvr529.140.2.0.0:bd06/23/2024:br0.1:svnAppleInc.:pniMac18,3:pvr1.0:rvnAppleInc.:rnMac-BE088AF8C5EB4FA2:rvriMac18,3:cvnAppleInc.:ct9:cvrMac-BE088AF8C5EB4FA2:sku:
dmi.product.family: iMac
dmi.product.name: iMac18,3
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
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